//*********************************************************************
// pp25.java    Java Foundation
//*********************************************************************

import  java.util.Scanner;

public class pp25
{
    //------------------------------------------------------------------------
    // 1 mile = 1.6095 km
    //------------------------------------------------------------------------
    public static void main (String[] args)
    {
       double mile;
       double km;
       double A = 1.6095;

       Scanner scan = new Scanner (System.in);

       System.out.print ("mile: ");
       mile = scan.nextDouble();
      
       km = mile * A;
       System.out.print ("km: " + km);
       }
}
